Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce aromatic
Patent
1997-07-02
2000-01-04
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
To produce aromatic
585313, 585449, 585467, 585475, 585481, 585320, C07C 101, C07C 264, C07C 268, C07C 522
Patent
active
060111909
ABSTRACT:
2,6-Dialkylnaphthalene is prepared from a feedstock comprising naphthalene and an alkylating agent, by a process comprising the steps:
(I) transalkylating isomers of dialkylnaphthalene and naphthalene to produce monoalkylnaphthalene and isomers of dialkylnaphthalene;
(II) separating the product obtained in step (I) into naphthalene, monoalkylnaphthalene, dialkylnaphthalene and other components;
(III) alkylating the monoalkylnaphthalene fraction from step (II) with an alkylating agent to produce dialkylnaphthalene; and
(IV) separating 2,6-dialkylnaphthalene from the dialkylnaphthalene fraction in step (II),
wherein at least step (I) or step (III) is conducted in the presence of a catalyst having a composition comprising a synthetic zeolite having an X-ray diffraction pattern with an interplanar d-spacing (.ANG.)
REFERENCES:
patent: 5001295 (1991-03-01), Angevine et al.
patent: 5292934 (1994-03-01), Sikkenga et al.
patent: 5744670 (1998-04-01), Motoyuki et al.
McWilliams John Paul
Motoyuki Masahiro
Sapre Ajit Vishwanath
Yamamoto Koji
Dang Thuan D.
Griffin Walter D.
Kabushiki Kaisha Kobe Seiko Sho
Mobil Oil Corporation
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